I am considering having an abominably noisy Goodmans CK-60 5 ton condenser replaced with a Carrier 38HDL 5 ton unit.
I know that the condenser and coil should always be matched for optimal performance and efficiency. On the other hand, using the existing coil (don't know the exact model) would save a bunch of money. Since this is not an area where humidity or extreme temperatures are any kind of concerns, just how big a problem would using a mismatched set be? In other words, is this such a bad idea I shouldn't even consider it, will I simply be looking at a slight degradation from perfect, or something in between?
If I have to change the whole set, I guess I ought to go to R22. Am I right to think that definitely means new pipework (= more $$) because of the higher pressure needed?